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package org.netbeans.validation.api.builtin.stringvalidation;

import java.text.NumberFormat;
import java.text.ParseException;
import java.text.ParsePosition;
import java.util.Locale;
import org.netbeans.validation.api.Problems;
import org.netbeans.validation.api.Validator;
import org.openide.util.NbBundle;
/**
 *
 * @author Tim Boudreau
 */
final class IsANumberValidator extends StringValidator {
    private Locale locale;

    IsANumberValidator() {
        this (null);
    }

    IsANumberValidator(Locale l) {
        this.locale = l;
    }

    @Override
    public void validate(Problems problems, String compName, String model) {
        ParsePosition p = new ParsePosition(0);
        NumberFormat.getNumberInstance(locale == null ? Locale.getDefault() :
            locale).parse(model, p);
        if (model.length() != p.getIndex() || p.getErrorIndex() != -1) {
            try {
                Double.valueOf(model);
                if (model.length() != model.trim().length()) {
                    throw new NumberFormatException();
                }
            } catch (NumberFormatException e) {
                problems.add(NbBundle.getMessage(IsANumberValidator.class, "NOT_A_NUMBER", model, compName)); //NOI18N
            }
        }
    }

}
